守护线程，但一个java运用只有守护线程的时候，java虚拟机就会自然退出

happyjianguo · Mar 4, 2018 · b2ec220 · b2ec220
1 parent bfa84f8
commit b2ec220
Showing 1 changed file with 31 additions and 0 deletions.
diff --git a/src/main/java/com/example/concurrency/st/DaemonDemo.java b/src/main/java/com/example/concurrency/st/DaemonDemo.java
@@ -0,0 +1,31 @@
+package com.example.concurrency.st;
+
+/**
+ * 守护线程，但一个java运用只有守护线程的时候，java虚拟机就会自然退出
+ * @author OKali
+ *
+ */
+public class DaemonDemo {
+
+	public static class DaemonT extends Thread {
+
+		@Override
+		public void run() {
+			while (true) {
+				System.out.println("I am alive");
+				try {
+					Thread.sleep(1000);
+				} catch (InterruptedException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+	public static void main(String[] args) throws InterruptedException {
+		Thread t = new DaemonT();
+		t.setDaemon(true);    // 如果不设置为守护线程，则会一直打印输出
+		t.start();
+		Thread.sleep(2000);
+	}
+}